| Model | 
GE2521 | 
CT2850 | 
CT2841A | 
CT2677ARA | 
CT2677A | 
CT2456 |
| Description | Passive Voltage Switchable 2-Position Oscilloscope Probe, 25/250 MHz, X1/X10 | Passive Probe, 10 / 250MHz, 1:1 / 10:1 / Ground Reference | Passive Probe, 15 / 350MHz, 1:1 / 10:1 | Passive Probe, 200 MHz, 10:1, Readout | Passive Probe, 200MHz, 10:1 | Passive Probe, 25 / 250MHz, 1:1 / 10:1 |
| Bandwidth | 250 MHz | 10 / 250 MHz | 15 / 350 MHz | 200 MHz | 200 MHz | 25 / 250 MHz |
| Risetime | 1.4 ns | 35 / 1.4 ns | 27 / 1.2 ns | 1.8 ns | 1.8 ns | 14 / 1.4 ns |
| Switchable | | Yes | Yes | No | No | Yes |
| Attenuation | 10:1 | 1:1 / 10:1 | 1:1 / 10:1 | 10:1 | 10:1 | x1 / x10 |
| Input Impedance | 10 MOhm | 1 / 10 Mohms | 1 / 10 Mohms | 10 Mohms | 10 Mohms | 1 / 10 Mohms |
| Input Capacitance (pF) | ˜12 pF | 90 / 14 | 90 / 12 | | | 45 / 12 |
| Compensation Range (pF) | 10 to 30 | 10 to 35 | 10 to 35 | 10 to 35 | 10 to 35 | 10 to 30 |
| Interface | | BNC | BNC | BNC | BNC | BNC |
| Readout Actuator | No | No | No | Yes | No | No |
| Ground Reference | | Yes | No | No | No | No |
| Cable Length inches (meters) | 1.2 m | 48 (1.2) | 48 (1.2) | 48 (1.2) | 48 (1.2) | 48 (1.2) |
| IEC 61010 Rating | 300V CAT II | 300V CAT II | 300V CAT II | 300V CAT II | 300V CAT II | 300V CAT II |
| Manufacturer's Warranty | | 1-year | 1-year | 1-year | 1-year | 1-year |
| CE Approved | | No | No | No | No | Yes |
| Notes | | Modular Construction | Modular Construction | Modular Construction | Modular Construction | |